ISO 18218-1:2023

Leather — Determination of ethoxylated alkylphenols (APEO) — Part 1: Direct method

Standard Details

This document is a method for determining ethoxylated alkylphenols (APEO) [nonyphenol ethoxylate (NPEO_n, where 2 ≤ n ≤ 16) and octylphenol ethoxylate (OPEO_n, where 2 ≤ n ≤ 16)] in leather. This direct method is especially suitable when a larger number of leather samples are to be checked for the presence of ethoxylated alkylphenols.

This method requires the use of liquid chromatography (LC) with a triple quadrupole mass spectrometer (MS/MS) to identify and quantify the ethoxylated alkylphenols.

NOTE 1 In the leather industry, the most commonly used ethoxylated alkylphenol is the NPEO, with an average of 9 EO. It has an optimum cloud point in water for the typical leather processing temperatures of 40 °C to 55 °C.

NOTE 2 This document and ISO 18218-2 use different solvents for the extraction of the ethoxylated alkylphenols from leather. Consequently, the two analytical methods are expected to give similar trends but not necessarily the same absolute result for the ethoxylated alkylphenol content in leather.

General Information

Status : Published

Standard Type: Main

Document No: ISO 18218-1:2023

Document Year: 2023

Pages: 10

Edition: 2

ICS:
59.140.30 Leather and furs

Preview Document

Life Cycle

Currently Viewing

Published

ISO 18218-1:2023

WITHDRAWN

ISO 18218-1:2015

ISO 18218-1:2023

Standard Details

General Information

Life Cycle

Add Standards To Trackedge

Enquiry Form